Solve sleep word from image hashes

client/src/main/java/SleepListener.java

@@ -21,11 +21,17 @@ final class SleepListener implements ISleepListener {
 	private static final String SLWORD_TXT = Paths.get("slword.txt").toString();
 	private static final String DICT_TXT = Constants.PATH_SLEEP.resolve("dictionary.txt").toString();
 	private static final String MODEL_TXT = Constants.PATH_SLEEP.resolve("model.txt").toString();
+	private static final String HASHES = Constants.PATH_SLEEP.resolve("hashes.properties").toString();
+
+	private static final int FNV1_32_INIT = 0x811c9dc5;
+	private static final int FNV1_PRIME_32 = 16777619;
 
 	private static final int MAXIMUM_INCORRECT_SLEEP_TRIES = 3;
 
 	private final IClient client;
 
+	private Properties hashes;
+
 	private OCR ocr;
 	private OCRType ocrType;
 	private String sleepWord;
@@ -83,6 +89,16 @@ final class SleepListener implements ISleepListener {
 					sleepWord = null;
 				}
 				break;
+			case HASH:
+				byte[] image = convertImage(data);
+				int hash = hash32(image);
+				sleepWord = hashes.getProperty(Integer.toString(hash));
+				if (sleepWord == null)
+					sleepWord = "unknown";
+
+				if (client.getSleepFatigue() == 0)
+					onSleepFatigueUpdate(0);
+				break;
 			case JOKER:
 				try (final FileOutputStream out = new FileOutputStream(hc)) {
 					saveBitmap(out, convertImage(data));
@@ -236,6 +252,34 @@ final class SleepListener implements ISleepListener {
 		}
 		return var4;
 	}
+
+	/**
+	 * FNV1a 32 bit variant.
+	 *
+	 * @param data - input byte array
+	 * @return - hashcode
+	 */
+	private static int hash32(byte[] data) {
+		return hash32(data, data.length);
+	}
+
+	/**
+	 * FNV1a 32 bit variant.
+	 *
+	 * @param data   - input byte array
+	 * @param length - length of array
+	 * @return - hashcode
+	 */
+	private static int hash32(byte[] data, int length) {
+		int hash = FNV1_32_INIT;
+		for (int i = 0; i < length; i++) {
+			hash ^= (data[i] & 0xff);
+			hash *= FNV1_PRIME_32;
+		}
+
+		return hash;
+	}
+
 	/**
 	 * Updates the sleep fatigue and takes appropriate actions based on the fatigue level.
 	 *
@@ -335,6 +379,15 @@ final class SleepListener implements ISleepListener {
 					this.ocrType = OCRType.MANUAL;
 				}
 				break;
+			case HASH:
+				try (FileInputStream fs = new FileInputStream(HASHES)) {
+					hashes = new Properties();
+					hashes.load(fs);
+				} catch (final IOException e) {
+					e.printStackTrace();
+					this.ocrType = OCRType.MANUAL;
+				}
+				break;
 			case JOKER:
 				hc = new File(HC_BMP);
 				final Joker joker = Joker.getInstance();

client/src/main/java/com/aposbot/_default/ISleepListener.java

@@ -6,10 +6,11 @@ public interface ISleepListener {
 	void setOCRType(OCRType ocrType);
 
 	enum OCRType {
-		NUM3(0, "Num3l (Internal)"),
-		JOKER(1, "Joker (Internal/Win32/JNI)"),
-		EXTERNAL(2, "External (HC.BMP/slword.txt)"),
-		MANUAL(3, "Manual");
+		HASH(0, "Image Hashes (OpenRSC)"),
+		NUM3(1, "Num3l (cross-platform)"),
+		JOKER(2, "Joker (Windows only)"),
+		EXTERNAL(3, "External (HC.BMP + slword.txt)"),
+		MANUAL(4, "Manual");
 
 		public static final OCRType[] VALUES = OCRType.values();